对复杂大规模可编程器件的特点，提出了一种新的数字频率计的实现方法。在QutusⅡ开发软件环境下，采用硬件编程语言VHDL，实现了数字频率计的设计。经过仿真，并下载验证。能够实现测频功能。-The complex features of large-scale programmable devices, a new realization method of digital frequency meter. In Qutus Ⅱ software development environment,